65625213 has 4 divisors (see below), whose sum is σ = 87500288. Its totient is φ = 43750140.

The previous prime is 65625199. The next prime is 65625239. The reversal of 65625213 is 31252656.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 65625213 - 2¹⁰ = 65624189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65605213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10937533 + ... + 10937538.

It is an arithmetic number, because the mean of its divisors is an integer number (21875072).

Almost surely, 2^65625213 is an apocalyptic number.

It is an amenable number.

65625213 is a deficient number, since it is larger than the sum of its proper divisors (21875075).

65625213 is a wasteful number, since it uses less digits than its factorization.

65625213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21875074.

The product of its digits is 10800, while the sum is 30.

The square root of 65625213 is about 8100.9390196446. The cubic root of 65625213 is about 403.3575978997.

Adding to 65625213 its reverse (31252656), we get a palindrome (96877869).

The spelling of 65625213 in words is "sixty-five million, six hundred twenty-five thousand, two hundred thirteen".